New chain - now it's slipping

NFMC
NFMC Posts: 232
edited September 2012 in Workshop
My chain broke in Manchester just now so I nipped to Evans to get a new chain fitted. I know nothing about chains so just got the one that the guy recommended (Shimano HG74 10 speed).

I should have gone straight back - but I was in a rush as I had to get back - but the chain was slipping pretty regularly. Just throwing my pedals two or three inches forward at random intervals.

Will it 'settle' down or do I need to take it back?

Thanks.

Comments

  • Dmak
    Dmak Posts: 445
    This is because your cassette is worn out. Chains and cassettes wear out together and need to be replaced together unless the chain is replaced frequently.

    I doubt it will settle down, although I'm not sure.
  • StrangelyBrown
    StrangelyBrown Posts: 232
    +1. Almost certainly this. To test, try putting it in a gear you don't normally use, so it won't be worn, and see if it still slips.
    It doesn't get any easier, but I don't appear to be getting any faster.
  • NFMC
    NFMC Posts: 232
    Thanks - bike was bought in 2008 and used in all weathers and only gets the most cursory of washes and tune-ups so I guess it's no surprise it's the cassette as well.

    Oh well - cheaper than commuting in a car. Need to keep telling myself that.
  • LiamW
    LiamW Posts: 358
    Could also be the front chainrings, though i'd agree with the other that the cassette would the main culprit. Have a look at the teeth on the chainset, if they look sharkfin like then it could be an expensive repair.
  • wishitwasallflat
    wishitwasallflat Posts: 2,927
    Agree with the others as worn casstte is most likley culprit but just in case check it has been fitted at the correct length as well.
  • NFMC
    NFMC Posts: 232
    Well, it was the cassette. Also needed a new derailleur. You wonder why they didn't pick up on that yesterday when they fitted the chain, but there you go.

    Off I go and I remember why I loved cycling. It was all running smoothly, there was no wind and I wasn't in a rush. Perfect. I felt like I had a new bike.

    But then I go and drop the bike outside a shop. And a spoke snaps. That's never happened before. I wonder whether my bike's now getting to an age where everything will start to break and snap and bend. Maybe I'm throwing good money after bad. So, within minutes I went from having a 'new' bike to one with a snapped spoke, an un-true wobbly bike wheel and back brakes that didn't work. Because of where I was I had to ride home so probably made the wheel worse.

    Not after advice - just venting my fury!

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